Answer:
The early kings ruled over only their own city-states. Lacking a centralized government and leader, the ancient region was prone to internal fighting among the kings for land and resources. As early as the 4th millennium BCE, ancient Mesopotamia covered the region that is now known as Iraq.
Explanation:
Closed ecological systems are ecosystems that do not rely on matter with any part of an outside ecosystem. An example of closed ecosystems are aquarium ecospheres.
Answer:
First answer is Eyes, Second is Gills, Third is heart.
Explanation:
Answer:
the silk road
Explanation:
Wasn't alot of information but i think this i right.
